81278785

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{136603}}^1$

素因数の和:136632

約数の個数: 16

約数和(自身を含む): 118025856

約数和(自身を除く): 36747071

約数列:

[1, 5, 7, 17, 35, 85, 119, 595, 136603, 683015, 956221, 2322251, 4781105, 11611255, 16255757, 81278785]

約数ペア:

[(1, 81278785), (5, 16255757), (7, 11611255), (17, 4781105), (35, 2322251), (85, 956221), (119, 683015), (595, 136603)]